106431720 has 64 divisors (see below), whose sum is σ = 319991040. Its totient is φ = 28320000.

The previous prime is 106431701. The next prime is 106431739. The reversal of 106431720 is 27134601.

It is an interprime number because it is at equal distance from previous prime (106431701) and next prime (106431739).

It is a super-2 number, since 2×106431720² = 22655422044316800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89530 + ... + 90710.

It is an arithmetic number, because the mean of its divisors is an integer number (4999860).

Almost surely, 2^106431720 is an apocalyptic number.

106431720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

106431720 is an abundant number, since it is smaller than the sum of its proper divisors (213559320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

106431720 is a wasteful number, since it uses less digits than its factorization.

106431720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 106431720 is about 10316.5750130554. The cubic root of 106431720 is about 473.9039845400.

The spelling of 106431720 in words is "one hundred six million, four hundred thirty-one thousand, seven hundred twenty".